TY - JOUR
T1 - Accumulation and partitioning of mineral nutrients in wheat as influenced by nitrogen form
AU - Wang, Xingting
AU - Below, Frederick E.
N1 - Funding Information:
Contribution of the Agricultural Experiment Station, University of Illinois at Urbana-Champaign. This study was supported in part by a grant from Tennessee Valley Authority, National Fertilizer and Environmental Research Center. The authors wish to express their gratitude to Ms. Juliann R. Seebauer and Ms. Shan Yan for technical assistance with plant culture and the chemical assays.
PY - 1998
Y1 - 1998
N2 - The form of nitrogen (N) [e.g., nitrate (NO3-) and ammonium (NH4+)] available to plants affects many growth processes, including mineral nutrient acquisition. The objective of this study was to assess the effects of N form on the accumulation and partitioning of mineral nutrients in wheat. Two species of spring wheat (Triticum aestivum L. cv. Len and Triticum durum Desf. cv. Inbar) were grown hydroponically in the greenhouse with N supplied as either all NO3-, or all NH4+, or an equal mixture of the two forms (mixed N). Plants were harvested after 21 days of growth, divided into shoots and roots and each part analyzed for nine mineral elements [phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), manganese (Mn), zinc (Zn), copper (Cu), and boron (B)]. The accumulation and partitioning of the mineral nutrients was dependent on the wheat species, the N form, and the nature of the ion. Inbar plants always accumulated more of each element than did Len. Compared with all NO3- nutrition, mixed N increased the whole plant and/or shoot accumulation of P, K, Cu, and B, but not Ca, Mg, Fe, Mn, and Zn; while all NH4+ decreased these values for most elements. With few exceptions, N form did not affect either the accumulation or partitioning of Mg and Fe. Plants grown with all NO3- accumulated more Mn and Zn than those receiving mixed N or all NH4+, while the partitioning of both ions was not affected by N form. When grown with mixed N or all NH4+, less P, K, Cu, and B was partitioned to the roots compared to plants receiving all NO3-. These results demonstrate the differential effects of N form on mineral nutrient acquisition and nutrient use by wheat, which may be related to N-form induced differences in plant growth.
AB - The form of nitrogen (N) [e.g., nitrate (NO3-) and ammonium (NH4+)] available to plants affects many growth processes, including mineral nutrient acquisition. The objective of this study was to assess the effects of N form on the accumulation and partitioning of mineral nutrients in wheat. Two species of spring wheat (Triticum aestivum L. cv. Len and Triticum durum Desf. cv. Inbar) were grown hydroponically in the greenhouse with N supplied as either all NO3-, or all NH4+, or an equal mixture of the two forms (mixed N). Plants were harvested after 21 days of growth, divided into shoots and roots and each part analyzed for nine mineral elements [phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), manganese (Mn), zinc (Zn), copper (Cu), and boron (B)]. The accumulation and partitioning of the mineral nutrients was dependent on the wheat species, the N form, and the nature of the ion. Inbar plants always accumulated more of each element than did Len. Compared with all NO3- nutrition, mixed N increased the whole plant and/or shoot accumulation of P, K, Cu, and B, but not Ca, Mg, Fe, Mn, and Zn; while all NH4+ decreased these values for most elements. With few exceptions, N form did not affect either the accumulation or partitioning of Mg and Fe. Plants grown with all NO3- accumulated more Mn and Zn than those receiving mixed N or all NH4+, while the partitioning of both ions was not affected by N form. When grown with mixed N or all NH4+, less P, K, Cu, and B was partitioned to the roots compared to plants receiving all NO3-. These results demonstrate the differential effects of N form on mineral nutrient acquisition and nutrient use by wheat, which may be related to N-form induced differences in plant growth.
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U2 - 10.1080/01904169809365382
DO - 10.1080/01904169809365382
M3 - Article
AN - SCOPUS:0031921734
VL - 21
SP - 49
EP - 61
JO - Journal of Plant Nutrition
JF - Journal of Plant Nutrition
SN - 0190-4167
IS - 1
ER -